Hi_Amos
坚持每天都在进步!!

window.navigator 对象包含有关访问者浏览器的信息。

Window Navigator

window.navigator 对象在编写时可不使用 window 这个前缀。

Navigator Object Properties

PropertyDescription
appCodeName Returns the code name of the browser
appName Returns the name of the browser
appVersion Returns the version information of the browser
cookieEnabled Determines whether cookies are enabled in the browser
language Returns the language of the browser
onLine Determines whether the browser is online
platform Returns for which platform the browser is compiled
product Returns the engine name of the browser
userAgent Returns the user-agent header sent by the browser to the server

Navigator Object Methods

MethodDescription
javaEnabled() Specifies whether or not the browser has Java enabled
taintEnabled() Removed in JavaScript version 1.2. Specifies whether the browser has data tainting enabled

实例:

<html>
<body>
<div id="example"></div>
<script>
txt = "<p>Browser CodeName: " + navigator.appCodeName + "</p>";
txt+= "<p>Browser Name: " + navigator.appName + "</p>";
txt+= "<p>Browser Version: " + navigator.appVersion + "</p>";
txt+= "<p>Cookies Enabled: " + navigator.cookieEnabled + "</p>";
txt+= "<p>Platform: " + navigator.platform + "</p>";
txt+= "<p>User-agent header: " + navigator.userAgent + "</p>";
txt+= "<p>User-agent language: " + navigator.systemLanguage + "</p>";
document.getElementById("example").innerHTML=txt;
</script>
</body>
</html>

警告:来自 navigator 对象的信息具有误导性,不应该被用于检测浏览器版本,这是因为:

  • navigator 数据可被浏览器使用者更改
  • 浏览器无法报告晚于浏览器发布的新操作系统

浏览器检测

由于 navigator 可误导浏览器检测,使用对象检测可用来嗅探不同的浏览器。

由于不同的浏览器支持不同的对象,您可以使用对象来检测浏览器。例如,由于只有 Opera 支持属性 "window.opera",您可以据此识别出 Opera。

例子:if (window.opera) {...some action...}

 

posted on 2013-12-16 00:41  Hi_Amos  阅读(489)  评论(0编辑  收藏  举报